Glass-blowing machine



Jan. 6, 1931. r J. w. LYNCH EI'AI. 1,783,312-

' cuss BLOWING manna: 1

Filed June 4, 191'! 14 Sheets-Shoot 1 W I V I attolu ufl 1511.6, 1931. w, LYNCH ET AL 1:883:12

GLASS BLOWING CHINE 7 l4 Sheets-Sheet 2 Fi led June 4, 1917 @uuantow rattOl$l lxl %%7/MZZZ Jan. 6, 1931.

W. LYNCH ET AL GLASS BLOWING MACHINE Filed June 4, 1917 14 Sheets-Sheet e wmnixmw Inventors I I I a Attorneys Jan. 6, 1931. J. w. LYNCH ETAL 1,738,312-

GLASS BLOWING MACHINE Filed June 4, 1917 l4 Sheets-Sheet 8 Jan. 6, 1931; Q JJ, w, LYNCH ET AL 1,788,312

GLASS BLOWING MACHINE Filed June 4, 1917 14 sheets-sheet 9 attoz "up Jan. 6, 1931. J. w. LYNCH ET AL v 1,738,312

GLASS BLOWING MACHINE I :Filed June 4, 1917 14 Sheets-Sheet 10 Jan. 6, 1931. J. w. LYNCH ETAL 1,788,312

' GLASS BLOWING MACHINE Filed June 4, 1917 14 Sheets-Sheet 11 lllllllllllil IHII gluvaukow attqzneyd Jan. 6, 1931. J. w. LYNCH ET AL, 1,788,312

GLAS S BLOWING MACHINE Filed June 4, 1917 14' Sheets-Sheet 12 a awoamtozd Jan. 6, 1931. J. w. LYNCH ETAL GLASS BLOWING MACHINE Filed June 4, 1917 l4'Sheets-Shee1i 13 wilt Vl coo awning Jan. 6, 1931. J. w. LYNCH ET AL 1,733,312

' GLASS BLOWING MACHINE Filed June 4, 1917 4 14 Sheets$heot 14 0 amauliou wi/tmeozs N h I I a I gam a.

Patented Jan; 6, 1931 U ITED. STATES PATENT, orrlca JAMES W. LYNCH, OF ALEXANDRIA, INDIANA, AND EDWARD G; BRIDGES, OI' ZANEB- VILLE, OHIO, ASSIGNORS, BY MESNE ASSIGNHEN'IB,

CORPORATION OF A emss-nnowme uac mm Application and June 4, lei-r.- Serial Io. 112,678.

This invention relates to a machine for blowing glass bottles and other articles and aims to provide automatic means for completing the article from a drop or gather of molten glass that may be fed to the machine automatically or;-by a workman. One of its objects is to provide a machine having separate tables mounted for rotation anddesign'ed tojcarry the blank molds M) and the blow molds respectively, said molds Gooperating' so as to transfer a blank from the blank mold to a blow mold.

A further object is to provide a machineof this character in which the blank is carried to a point where the transfer is effected by the blow mold on one table closing about said blank while it is suspended by a neck ring. A further object is to provide revolub'e tablesboth of which receive power from an a 2g interposed gear so that no loss of motion will occur, as would be the case should motion be transmitted through either of the tables to the other.

A still further object is to provide novel means for mounting the blank molds where- I by said molds will be opened and closed and modily inverted, and subsequently restored to their normal positions during each comlete rotation of the table supporting the lank molds.

Another object is to provide pneumatic means controlled b the inversion and restoration of the blan molds" for holding the members of the blank moldsclosed and for F opening them at predetermined points during the progress of the mold with the rotating table.

A still further object is to provide means whereby both mold tables are simultaneousl locked and unlocked, the same power utilized' for this purpose being also employed for intermittentlyrotating the tables synchronously.

Another object is to provide sim 1e and .eilicient means for automatically s caring the gather after being deposited in the blank mold at the first station of thecycle of operations, this shearing mechanism' being quick and accurate in operation and compact in construction.

Another obj'ect is to rovide pneumatically controlled means f dr swinging a blow head into position over the blank mold while at its first station and lowering it onto the mold to direct the air under ressure on to the contents of the mold there y to pack the metal about a neck gain ositioned in the bottom ortion of the Ian mold, the said blow hea being automatically restored to its initial position during the movement of the blank mold to its next station.

With the foregoing and other objects in view which will ap ear as'the description proceeds,- the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can he made within the scope of what is claimed withoutdeparting from the spirit of the invention.

In the accompan in drawings,a preferred form of the invention is shown embodied in a machine arranged for hand feeding.

. In said drawings:

Figure 1 is a plan view of the blank-table and cooperating parts.

Figure 1" blow table and the correspondin parts.

Figure 2 is a central vertical section on line 2-92 through the structure shownin Figure 1.

Figure 2 is a central yertical' section on line 25-- -through' the structure shown in i re 1'. Y igure 3 is a section on line 3-3 of Figure 1. a

Figure 4 is a section on line 4-4 of Figure 1.

- 7 Figure 5 is a section on line 5-5 of the pedestal or is a section on line 99 of Figis a section on line 10 1 0 Fig- 'IO LYNCH CORPORATION, A v

is a corresponding view of the ada ted to'ca V be of any nu mbe'r desired." "Inthe present 'in- Fi mak.

Fig-

13 is a section on line-13-13 Fig-.

Figure 14 is a section on line 1414 Fig-F- 15 is an elevation of'the blow head guide at the first station of the blank iiioldL' 16 is a rear elevation of the holding block of one of the blank molds, and portions therewith.

of the adjacent molds coo Figure 17 is a section on "line-17 -17'Figure 2 and showing the stationary valveat the delivery stationof-the blank .mold. Figure'18 is'a section through the cam actuated valve at the transferv station of the blow table, said section being taken oi the line 1.8-18 Figure 2. u Figure 19 1s aglan view of 'one.of the clamping jaws use with the blow" molds. 20 is a side elevation of saidjaw. F1(gure 21 is an elevation of the guide provide for the gripping members of the delivery mechanism.

22 isa side elevation of one of the gripping members of the delivery mecha- 23 is a side elevation of the con.- ve or mechanism.

' 'gure 24 is a view partly in elevation and partly-in transverse section tothe conveyor mechanism. 1 Figure 25 is a diagram of the blank formmg mechanism and associated parts.

igure 26 is a diagram of the parts assembled with theblow table.

Fig. 27 is a diagrammatic view of. the complete machine, the parts being arranged and shownin sectional elevation.

In the several figures of the drawings, th parts of the machine are designated by the. same charactersof reference throughout the v ews: p

- The type of machineillustrated is mounted upona base 1 of suitable proportions adacent one endof'which iserected a pedestal or stand 2 designed to, support the blank table 3 of the ap aratus; A similar support or pedestal 1 is erected on the base adjacent the other end thereof and is designed to supthe blow table 5. The blank table 3, is

' several blank molds here ina r more fu y described and which can stance six of these blank molds have been shown-connected to the table 3, and;each of the blank molds, durin one complete rotation of the blahk table, is adapted to sto at six distinct st'ations indicated at I, II, III, v Vfan'd VI respectively. All of the blank molds are of the same construction, and they all'operate successively in the same manner so thatin describing the construction and opblank mold just H eration of one. mold it is to be understood that the same descri 'on applies to all of the molds on the bl table.

Blank table and support or pedestal 2 by the wall of ints during the rotationof the table v pedestal and in the same horizontal plane are three ves 9, 10 and 11 (see 2,

'7, 8 and 9 which are designed successively to register with the lower or inner end of the upper passage 7 during the rotation of the. .table. The

oove 9 isso located that it will register wit the passage 7 for closing the 4 tion- I, while the lank mold is at said sta-. tion I, andalso during the movement of the blank The grooveIO is adaptedto register withthe passage 7 immediately after the blank mold eaves station II. Passage 7 remains in communication with the I prior to the arrival of the blank mol at station III at which time the lower passage 8 comes into register with a short lower groove 12 (Figs. 7, 8 and 10) in the stand or pedestal 2. This lower groove is in communication through aninclined passage 13 with'the third upper groove 11 and remains in communication with the passage 8 until after the blank groove 10 until 'ust.

rior to its arrival at stamold from station I to station II.

mold has left its station III and has almost reached its station IV. As the blank mold reaches its station V the upper passage 7 comes into communication with the groove 11 and this groove is in communication, through en the blark llfifld. is at station IItItIlthe u per passage wi communicate wi an el haust bore 17 (Figs. 8 and 12) formed in the stand or pedestal 2. 'Another exhaust bore 18 (Figs. 8 and'11)is formed in the stand or pedestal 2 and is adapted to register llb lit!

with the inner end of the lower passage 8 when the blank mold arrives at its station V.

Secured t'o and extending upwardly from the stand or pedestal 2 is a tubular extension 19 constituting 'a cam track, (see Fig. 2) there being formed on or secured-to this extension along a radial line extending be- 4 transfermeghanism to be described herein 1 -0 extension 19 and-16cm invaders tween etaticns II III-a:-(Fig ;-'17

communicates with aeentrai bore 24 extendin'ginto the valve from its inner end. Thus m;- when pressure'fromthemain air line .is directed against the inner; end of the valve through a pressure'port 25, the valve will-be shifted against the opposite end of its casin 21 and the stem 26 of the valve will be presse 1 outwardly from the surface of the track or extension 19. When the valve is in this position, the groove 23 is out of register with an outlet port 27 (shown in Fig. 17).

Formed with or connected to the upper bend of the track or extension 19 are oppositely extending segmental wings 28 and 29, (see Figsl) the wing 28 being arranged above the blanktable 3 between stations'V and VI while the peripheral portionof the Q wing 29is arranged above the blank table 3 and extends over-the space between stations II and III. Connected to-or formed with'the bottom faceof the wing 28 (see Fig. 2) is an arcuate rack 30 while another rack 31 is arranged on the bottomface of'the peripheral portion of the wing 29. Thewing 28 has an extension 32 (see Fig. 1) wh ich is arranged back from the rack on the wing 29 and extends over the table 3 at station III. .These wings are of course fixed relative to the stand or pedestal 2 and the racks serve as operating means forfthe revoluble cylinders as will he hereinafter pointed out, while the wing 29 constitutes'a support for the portion of the sit i Blank mold inverting mechanism Journaled within each of-the bearing mem- 5 be'rs 6 is a cylinder '33 (seeFig. 2) having a piston chamber in itsinnerend as indicated at 34 and the inner end of this piston chemher is closed by a head 35 from the center of which projects anan'gular boss 36 (see Figs.

' be. 2m 1s =Thisghossjsprovidedwith diametrically opposed flat faces parallel witheachder 33 cannot rotate about'its-longitudinal "e0 axis "and such rotation can only occur after the boss 36 has passed out of engagement 'with the lower edge of the track 37. Another similar depending track 38, (see Fig. 2) extends downwardly from the up er portion of the betfieen stations plied tothe bores-15 and-'16 III and V and is adaptedgto engaged by the other flat face of t e hoss'after the revoluble cylinder has been turned one'half 'revo-' 'lut-ion, as hereinafter'described, thus to hold the revoluble cylinder against movement out 1 of the position to which it has been turned. v c v Slidably mounted in the cyliiider head 35 is a lunger 39- (see 'Fig. 2) vand thislung'eris. a apted. when the-blow moldvis. roughtfl to station III, to-' alinc'with-ithestem. 26 -=of= valve 22, 'said plunger .bein .-pressed -'oi1t=- wardly into the piston chain r-34 by coming against the cam 20 (see-Fig. '17 just'p'rior to the arrival of'the plunger 39 at-station III." Formed on or secured to the cylinder 33 closeto the outer face of the bearing member 6 is a gear 40 ada ted; during each complete.

' rotation of the. lank table'tosuccessively engage the racks '30 and 31..it being. understood thateach rack is so proportioncd rela-- tive to the geafithat it will. cause the'gear to make a one half revolution while assing: from one 'end to the other "of the rec 'Ex-' tending from the outer face: of the gear 40 (see FlgS. 1 and 2) are upTperand lower cars 0 41 and 42 andthes'e ears .are connected bya pivot pin 43 on=wliich=aresnounted arms. 44 extending from the opposedfmembers 45- of the blank mold. Pivotal-lyconnectedt-o each of the'arms 44adjacentthe. center there-Z of and close to its-mold member. 45 is a link 46,the two links of the mold being extendedinwa-rdly and attached- 1:0 a; cross head. 47 which extends between the upper andlower ears 41'a-nd 42. -Th'is cross h'eadis attached.

at its center to therod 48=Qf a piston 49 mount-- ed to reciprocatein the -cylinder'chamber 34. An annular groove-'50, is tormedinthe cylinder 33 and constantly'communieateszwith the passage 7 A passage 51 extends longitudim5 nally within the wall of cylinder 33 and connects the groove '50-. with "the inner end-ofthe c 'linder where itopens throilgh a .port intoi t einner endof the" iston-Lchamber.;34.A- port 52 is formed int e'outer end portion-of; no the cylinder 33: and is"adapted', when.- fliecyil inder is rotated through-1809.- to cometintoregister with the upper ndiof th assagefi. thus to direct air;--under pressure. mm said passage against theouter face oif-t'he piston- 49'. n5

Assumin that 'a'in'under essureis sup PS; Figs. 12,17. 8,.

13 and 14) .and is thus-distributed tb-the grooves as.hereiuheforeadescrihed; it -=will be apparent that when the blank mold arrives rzeat station I the passage :7-an'd groove 9. will direct pressure by way of -groove 50- a-nd 'pa-- sage 51 to the backface 0f-the piston 49with. the result that'said' pistonwill bed'irected outwardly against-the:outerend-ofi-th'e chami-L Hrs her 34 and the links 46 will pressag ainst the arms 44 to holdthc mold members-tightly toe gether. As thciblank-mold-moves vfrom .stjntion-I to station I-Ii-the pressure againsbthe piston 49- will be maintaineda-through ithe lee roove 9. Immediately after the blank mold r eaves stationII the gear 40 will engage the against the jaws 53 rack 31 so as to rotate the cylinder through 180, thereby to invert the blank mold pres: sure being maintained back of the piston 49 during this rotation through the annular has been brought into register with the exhaust bore 17. The

groove 12 through which pressure is distributed to the outer face of the piston 49 when the mold is at station III, con-- tinues to direct pressure against said piston until just prior to the arrival of the mold at station IV. When the mold arrives at station V. the passage 8 comes into register with the exhaust bore 18 and the passage 7 comes into register with the groove 11 so that pressure is directed from said groove 11 and the passage 7 to the back face of the piston 49 with the result that the members of the blank mold are swung together and are maintained in this position while the mold is moving from position V to position 1. Pressure is maintainedagainst the piston while the mold is moving from position V to position VI and during this stage of the movement of the mold the gear 49 comes into mesh with the rack 30, thus causingia one half revolution of the cylinder 33 so that when the cylinder arrives at station I it will have the same posi tion as when it started its cycle of movement.

Neck ring Pivotally mounted on one end portion of the pin 43 (see Figs. 1 and 2) are oppositely extending jaws 53 to the outer ends of which are attached se tuting the sections of the neck sections are ada d to close together at the neck end of the lank mold,'and are adapted to be surrounded by a portion of the blank 'mold as is usual in devices of this character.

ds bers of the blow Connected to. the jaws 53 between their en are links 55 and these linksare in turn attached to a cm head 56 which has a guide pin 57 slidahly mounted in an opening 58 formed in the from the cross ead 56 and extends downwardly when the mold is at station I but projects upwardl when the III. When t e lug and cross head are at their outermost pos ti ns,:the links 55 press the, neck ring closed to ing 59 and its'cmss he ether, but when the are drawn inwardly the members of the neck ring are shifted away from each other.

tal members 54 consti-. ring. These r 40. A lug'59 projects mold is at station and hold the members of Mounted on the extension 32 of the wing 29 at station 111 is a c linder 60,containing a piston 61 from whi projects a stem 62. Connected to the outer end of this stem is a spool 63 and this spool is designed to be held at its outermost position under normal conditions so that when the blank mold arrives at station III the lug 59'will enter the groove in the spool.

Mounted on the wing 29 is a valve casing 64. (see Figs. 2 and 25) this casing being provided with a pressure inlet port 65, exhaust ports 66 and 67, and outlet ports 68 and 69. The outlet port 68 is located between the inlet port 65 and the exhaust port 66, while the outlet port- 69 is located between the inlet port 65 and the exhaust rt 67. Constant pressure is directed agamst the port 65 and the outlet port 68 communicates with the inner end of the cylinder through a passage 70.

A passage 71 connects the outer end of the cylinder 60 to the outlet port 69. a

A valve 72 is mounted to reciprocate within the casing 64 and has a centrally enlarged portion 73 adapted to normally close the port and also having enlarged endeportions or heads. These heads are adap to alternately close the exhaust ports 66 and 67. A pressure inletvport 74 is formed in the inner end of the valve casing 64 and another pressure inlet port 75 is formed in the outer end of the valve casing. Thus it will be seen that when pressure is directed through port 74 against the valve 7 2,- which action will take lace when the mold reaches station III, the inlet port 65 will be placed in communication with the outlet port 69 while the outlet port.

68 will be placed in communication with the exhaust port 66. Thus air under pressure will flow through the passage 71 and against the outer face of the piston 61, forcing said piston inwardly and causing the spool topull the lug 59 inwardly and move the members of the neck ring away from each other.

The fo ing 0 rationis preferably so timed relative to e opening ofthe blank mold'at station III that the members of the neck ring will not open members ofthe blank mold have become disengaged from the glass article and the memmold hereinafter referred to have engaged the article. 1

7 It may be stated at this time that when the members of the blank mold are moved apart at station III the piston 49 will strike the plunger 39 (Fig. 17) and force it agains the-stem 26of valve 22 thus causing saidvalve to shift inwardly and bring the pressure inlet 25 into communication with the outlet port 27. This will control certain other operations as be hereinafter pointed out.

Blow head Mounted onthe base 1 adjacent station I out until after the is'a standard 76 (see Fig; 3) having a laterally extending sleeve 77 in which is slidabl mounted a post 78 which can be adjusted to any desired elevation and held by a set screw or in any other approved manner.

Mounted on the upper end of this post is a blow head table 79 containing a cylinder 80 in which a piston 81 is mounted to reciprocate. Arranged on one side of the cylinder .80 is a valve casing 82 which is provided, near each end, with an outlet port, (see Fig. one of which has been indicated at 83, while the other has been indicatedat 84. is in communication; with the lowerend of the cylinder 80 while the port 83 is in communication through a passa e 86 with the upper end of the cylinder. A vafve 87 is slidably mounted within the casing 82 and has annular grooves 88 and 89 designed, when the valve is shifted in one directlon, to establish communication between 7' port 84 and the pressure port 90 and, when shifted in the opposite direction, to establish communication between port 83 and the pressure port 90. The port 90 is connected to a pressure pipe as hereinafter pointed out.

A rod 91 the piston 81 and is end, .with a head 92.- 93 extending therefrom on which is journaled provided, at its upper a roller 94-adapted to work up and down 1 within a camslot 95 (Fig. 15) formed within an upstanding guide plate 96 mounted on the table of the blow head. Thus it will be seen that during the upward movement of the piston 81 the ally after it -has moved strai ht upward a short distance and, during the downward movement of the piston the head 92 will be swung laterall and then moved strai ht downwardly. xtending from the head 92 is an arm 97 to the outer end of. which is attached a cylinder 98. Air under pressure is adapted to be 7 ditions to the upper end of the c linder through a flexible pipe a portion 0 which has been indicated at 99 and the lower end of the cylinder is provided with an air outbelow the valve portion the disk being let 100 in which a tubular stem 101 is adapted to slide. This stem is provided at its upper end with an enlargement 102 constituting a valve which rests normally on a seat 103 in the bottom portion-of the cylinder 98, and serves to prevent under normal conditions from'the cylininto the stem thereof so that when the valve is pushed upwardly away from its seat air will be free to escape through the der." Radial ports 104 open ports 104 and downwardly into the stem.

X disk 105 is carried by the lower'end of stem and constitutes a blow head, this with outlet ports 106 in communication with the interior of the stem. Thus it will be The port 84 through a passage 85 'on which is ig. 3) extends upwardly from v This head has a stud 107 cam slot will swing thehead later:

directed, under certain con-- The stem 115 of 115 will be" moved wit '1;

provided at and near its center. register '-withi 'the' two seen that when the head 92 moves downwardas hereinbefore described-the blow head 105 will come against the u per end of the blank mold at station I and will be shifted relative to the cylinder 98 so that valve 102 will be unseated and the air under pressure within the cylinder will be discharged downwardly on to the gather which may have been deposited in the blank mold at station I. When the head 92 is ushed upwardly it will first move the blow ead straight up away from the blank mold and then swingit to one side andion the downward movement of the head 92- this'motion-will be reversed. Cons uentlywhen the blow head-is inits norma position ,it is above but at one side of the blank mold at station I and will not interfere with the placing. of a gather downpm 107-secur1ng a spring disk holder. 108

when a blank mold is brought to position at station I, to overhang and .contact with the upper end of said, blank mold; The pin also serves as a pivot for the intermediate portions of crossed levers 110, each lever av n one arm sharpened-to constitute a shear blade 111 while the other arm'ofeach lever is slotted longitudinally as at 112 mounted a ring 109 adapted,

Fig. 1). The two slotted arms are slida 1y engaged bystuds 113 (Fig. 1) extending from the free ends of a to k 114 provided at one end of a stem 115= projecting from a piston 116. This" piston is mounted to slide in a cyhnder 117, said cylinder having ports 118 and 119 at the outer and inner ends thereof respectively and which ports communicats with the valve; casing 120. Another port 121 (Fig. 5) is arranged at oneend of the yalve ca'smg120 and another'inlet port 122 isprovided-at the other-end ofthe casmg 120. A pressure'inlet port 122 is located between the endsofthe-casing 120 and exhaust ports-120'- are also provided. A. valve 123 is slidably mounted m the 120 and, when pressure is, directed 'thron E port 122 against oneend of this valve said valve is shifted so as to close communication with :p essum-wiub d W T' frdm BM-t() p()1't ':119,' n: ,I.

piston 116: slides withina "sensing has opposed ports 'F-ig; 25). An annular casing 124 and 125 and 126 (see groove-127 'is 'formed the-stem' I15 and lpiston 116 is "forced in one e shearing. strdke; by' the adm'iswhen the tion, on-t sion' of premure throu h rt 119, this stem e pistoii'to" bring the groove 127 intoports 125 126,- thusfto establish communication betweenthe'two po 'l s-i" 107 and bears downwardl Neck pin mechanism Carried by the upper portion of the standard 76 is a cylinder 129 in which a iston 130 is mounted to slide. This cylinder as slight freedomof movement to allow the neck pin to adjust itself laterally to the neck rin of the adjacent cooperating blank mold. The stem 131 of this iston projects upwardly beyond the top oft e standard and is provided,

at its up I r end, with a head 132 from the to of whic extends a tapered plunger or nec pin 133. This neck pin is hollow but closed at its upper end and extending from the base portion of the plunger or neck in are radial outlets 134 communicating wit the interior of said glunger or neck pin. A bore .135 is forms in a stem'131 and has a pressure inlet port 136 while extending from the upper end of the bore is a tubular nozzle 137 extending into the hollow lunger or neck pin but spaced from the wal thereof. Thus it will be seen-that air under pressure when directed into the stem 131 will be discharged u wardly against the inner walls of the punger or neck pin 1'33 and will then flow downwardly around the nozzle 137 and out through the oulets 134. This acts as a means for cooling the neck portion of the partially completed blank when thelgather is packed into the blank mold.

An inlet port 138 is provided in the bottom of cylinder 129 so that when air'under pressure is directed therethrou h the piston 130 will be raised and the nec pin or plunger elevated into the neck rin 54 at the lower end of the mold at station Operation at station I Pressure is adapted to be directed to the difierent ports at station I as heretofore in- .at station I in' its inverted and closed posi- -139 whic tion, the'gather de nding from a punty is lowered into the b ank mold. Referring to Fig. 25, during the downward movement of it comes into contact with a lever when depressed by the punty, will shift a punty valve 140. This punty valve controls the son ofnpressure from a supply to the port 122 of v V0 123 and when the pun tween the pressure supply through the ports 125, and 126 and causes the pressure to be distributed to one end of the valve casing 82 and to the port 121. The pressure directed into port 121 will restore the valve 123 to its initial position and-will direct pressure through port 118 a ainst the outer face of the piston 116 so that said piston and its stem 115 will be shifted inwardly to their first positions. The pressure directed into the end of the valve casing 82 will shift the valve 87 out of its normal position so as to direct pressure through the valve casin by way of groove 88 into the upper end 0 the cylinder 80, thus to force the piston 81 downwardly. Obviously the shearing actionwill be almost instantaneous andlwill take place before the blow head can be lowered. As the blow head is lowered'by the downward movement of piston 81 the various parts will operate as hereinafter pointed out, the disk 105 coming against the ring 109 so that ressure will be promptly directed downwar l on to the gather. This gather will be acke about the neck pin or plunger 133 whic reviously has been elevated into the neck ring at the lower end of the mold. It is of course tobe understood that the blank mold is so positionedon the blank table that it will be supported in proper position to receive the neck pin or plunger and to be engaged by the blow ead at station I.

The cylinder 129 has an inlet port 141 and this port as well as the port 138 are in communication with certain pressure conductors as will be'hereinafter described so that the neck pin or plunger will be withdrawn from the neck ring at station I immediately after the packing of the gather about said neck pin or plunger and 'ust prior to the movement of the blank mold from station I to station II.

Blank blowing mechanism Erected on the base 1 at station II is a standard 142 (see Fig. 4) supporting a table 143 to which is connected a c linder 144, this cylinder being provided wit a port-145 at the bottom thereof andanother port 146 at the top thereof. A piston 147 is mounted to slidewithin-the cylinder and has a stem 148 projecting upwardly therefrom and carrying a blow "head 149 having a central bore 150. Slidably mounted withm this bore is a stem 151 extending. from a valve 152 and this valve isadapted normally to press against a seat at the lower end of the bore 

